Broadband corner reflector based on paper folding metasurface

The invention belongs to the technical field of corner reflectors, and relates to a paper folding metasurface-based broadband corner reflector, which comprises a dielectric layer, a surface layer arranged at the top of the dielectric layer and a floor layer arranged at the bottom of the dielectric layer, the surface layer comprises a plurality of metasurface units which are distributed in a rectangular array; after the surface layer, the dielectric layer and the floor layer are sequentially stacked from top to bottom, paper folding is carried out, so that a plurality of paper folding units distributed in an array mode are formed; each paper folding unit comprises a first array and a second array connected with the first array; each of the first array and the second array comprises a plurality of metasurface units distributed in a rectangular array, the row number of the metasurface units in the first array is equal to the row number of the metasurface units in the second array, and the column number of the me